Borsetto-Lugli Thesis Presentation

7/29/2019 Borsetto-Lugli Thesis Presentation

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Politecnico di MilanoLecco Campus

Thesis Director: Prof. Ing. Marco ImperadoriCo - director: Ing. Marco Cagelli

Federico BorsettoMatteo Lugli

GREENKNOT:

ZeroNET Scholastic Building

Long

Beach,

California

Teaching and Application of Innovative TechnologiesandPassive Strategies


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Sustainable building

Landmark

ZeroNet

Social space

California LosAngelesCounty LongBeach


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Area overlook


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Long Beach Boulevard


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Weather data Average temperatures, Long Beach

657Cooling 673

HeatingDegree days

0

5

10

15

20

25

30

35

40

Gen Feb Mar Apr Mag Giu Lug Ago Set Ott Nov Dic

T[C]

Tm

Tm min

Tm max


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U.R. media 60%

Relative humidity daily data

30

40

50

60

70

80

90

100

0 2 4 6 8 10 12 14 16 18 20 22 24

U.R.

[%]

Luglio

Agosto

Settembre


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Annual weather data comparison

Long Beach

MessinaMilano


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Architectural Design


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Concept

East

West

Orientation Largegreenarea

Partiallyundergroundvolumes

LoweredPiazza

Mainwindsdirectionsorientatedentrances


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Level 1


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Level 3


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South elevation


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West Elevation / North Elevation


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Structure


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Main structure


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Main structure


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Steel structure


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Steel structure Cantilever classroom


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Steel structure - Bracings


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Linear static Analysis

Most stressed Column

1879 kN

1220 kN

Deformed structure

Most stressed Bracing


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Modal Analysis- First mode

ModePeriod

ModeFrequency

1,2 Hz

0,83 s


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Modal Analysis Second mode

ModePeriod

ModeFrequency

2,9 Hz

0,33 s

d l l i l


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Most stressed Column

1722 kN 986 kN

Most stressed Bracing

Of Linear static Analysis

Results

80% 100%

Modal Analysis Internal Stresses


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Sustainability

S S h D i


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Summer Scheme Design

L i l h E ti d i i l ti


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WeatherData

Building

Type 62Excel

A/CON/OFF

Shadings

If Tint > Tcomfort

Ventilation

Outputs

Logical scheme Energetic dynamic simulation

Heating/ CoolingPeriod

Lighting

TRNSYS

Annual Output


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Annual Output

Weekly Output


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Weekly Output

Model Corrections ClassroomZone


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Model Corrections Classroom Zone

1 Mod. 1 Mod.

CoolingHeating

20,4 11,5

RequiredLoads[kWh/m2]



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1 Mod. 2 Mod. 1 Mod. 2 Mod.

CoolingHeating

18,420,4 11,5

SouthfacingwindowsAreaIncrease

2kWh/m2a





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CoolingHeating

14,420,4 11,5

Nonocturnalventilation

4

kWh/m2a





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CoolingHeating

15,120,4 11,5

Insulationleveldecrease 5cm

+0,7

kWh/m2a





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CoolingHeating

15,120,4 9,111,5

InternalShadowings

2,4

kWh/m2a



Model Corrections Offices Zone


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RaffrescamentoRiscaldamento

11,511,511,72,9 6,00,1


Model Corrections Offices Zone


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Classrooms

Natural lighting


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Daylight Factor

Lighting Levels

g g

21 decCloudy sky

FLDm = 5,6%


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Building Envelope Performance Control


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Natural ventilation - Typical classroom


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Double Facing RoomsAir flow

0

0,1

0,2

0,3

0,40,5

0,6

0,7

0,80,9

1

0 1000 2000 3000 4000

MinimumA

rea[m2]

Inclinazione a 70

Inclinazione a 10

Natural ventilation - Typical classroom


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0

0,5

1

1,5

2

2,5

3

3,5

4

Vair

Inle

t[m/s]

Inclinazione a 70

Inclinazione a 10

Double Facing RoomsAir flow

Air velocity Analysis


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2,5

AirSp

eed[m/s]

TemperatureC

Maximum air speed

0,8 m/s

Comfort Limit

28,5C

Adaptive comfort


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Field experimentsMain parameter: Text Posture, CLO, MET changes accordingly

Free Running Buildings

Greater toleration , Minor expectations

Adaptive comfort


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140h/year Above ComfortLevel

Annual Required Loads Classrooms Zone


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15,1kWh/m2

Heating

9,1kWh/m2

Cooling

3,40kWh/m2

Dehumidification

2,84

kWh/m2

0,04

kWh/m2

StandardModel

Adaptive

Model


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Conclusions

Mechanical services Scheme


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Vacuum SolarTubes30 kW

Hot waterReservoir

Heating Backup20 kW

Air Conditioning

RadiantFloor

AbsorptionCycle

Dissipator

Cooling Backup20 kW

Classrooms

OfficesLabs

Annual Energetic Balance


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90 m2 Vacuum SolarTubes

15000 kWh

15600 kWh

sensible

4000 kWhlatent

6000 kWh

4000 kWhCOP=3EER=3

Electric Heat Pump

5000 kWhMechanical Services

34000 kWhAppliances

38000 kWhTotal Consumption

39000 kWhAnnual Production

150 m2

PV Panels

Theoretical LEED Certification for Schools


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IndoorEnvironmental Quality 14/19

Sustainable Sites 14/16

WaterEfficiency 4/6

Innovation &DesignProcess 2/6

Materials &Resources 9/13

Energy&Atmosphere 15/17

Total

58/77

Platinum


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Borsetto-Lugli Thesis Presentation

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